Finding the Fourth Proportional to 78,684.06, 108,582.60 and 42,874.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,684.06 : 108,582.60 = 42,874.38 : x
2. Step 2: Convert to fraction form
   78,684.06/108,582.60 = 42,874.38/x
3. Step 3: Cross multiply
   78,684.06x = 108,582.60 × 42,874.38
4. Step 4: Simplify right side
   78,684.06x = 4,655,411,653.79
5. Step 5: Solve for x
   x = 4,655,411,653.79/78,684.06
6. Step 6: Final answer
   x = 59,165.88